Weakly basic anion exchangers, processes for their preparation b

Details Weakly basic anion exchangers, processes for their preparation b Weakly basic anion exchangers, processes for their preparation b

1995-05-18

1997-03-18

Zitomer, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

210660, 210681, 210683, 525381, 525382, C08F 832, C02F 142, B01J 4104, B01J 4112

Patent

active

056123833

ABSTRACT:
Weakly basic anion exchangers of the poly(meth)acrylamide type which have been prepared by aminolysis of poly(meth)acrylonitrile or poly(meth)acrylate with polyamines of defined composition have an improved absorption capacity for sulphate ions and are suitable for selectively removing sulphate ions from aqueous liquids, in particular from sodium chloride brine and from waste waters.

REFERENCES:
patent: 2582194 (1952-01-01), Dudley
patent: 2675359 (1954-04-01), Schneider
Ullmann's Encyclopedia of Industrial Chemistry, 5th edition, vol. A14, pp. 399-400 (1990).
D.L. Owens, Practical Principles of Ion Exchange Water Treatment Tall Oaks Publishing Inc., Vorhees, NJ, p. 25 (1986).
Advances in Macromolecular Chemistry, W.M. Pasika, editor, vol. 1, Academic Press, New York, NY, pp. 139-148 and 166-167 (1968).
F. Helfferich, "Ion Exchange"(1962), 56, 68, 71, 299, McGraw-Hill (New York).

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